CVE-2023-32377 in macOS
Summary
by MITRE • 09/27/2023
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in macOS Sonoma 14. An app may be able to execute arbitrary code with kernel privileges.
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Analysis
by VulDB Data Team • 11/06/2025
This vulnerability represents a critical buffer overflow condition that exists within the macOS kernel implementation, specifically affecting systems running macOS Sonoma 14. The flaw arises from inadequate memory handling practices during buffer operations, creating an exploitable condition where malicious code can manipulate memory boundaries beyond their allocated limits. The issue is particularly concerning because it enables an attacker to escalate privileges from user-level execution to kernel-level privileges, fundamentally compromising system security. According to CWE-121, this vulnerability falls under the category of stack-based buffer overflow, where insufficient bounds checking allows attackers to overwrite adjacent memory locations including return addresses and critical control data.
The operational impact of CVE-2023-32377 extends beyond simple privilege escalation, as it provides attackers with the capability to execute arbitrary code with the highest level of system privileges. This means that any application or malicious actor exploiting this vulnerability can gain complete control over the affected system, potentially leading to data exfiltration, persistent backdoor installation, or further network reconnaissance activities. The vulnerability aligns with ATT&CK technique T1068 which describes local privilege escalation, and specifically maps to the use of kernel exploits for gaining unauthorized system access. The fix implemented in macOS Sonoma 14 addresses the root cause by introducing enhanced memory management controls and stricter bounds checking mechanisms that prevent the buffer overflow condition from occurring.
From a security perspective, this vulnerability demonstrates the critical importance of proper memory management in kernel space operations, where even minor flaws can result in complete system compromise. The fix implemented by Apple likely involves enhanced input validation, improved memory allocation strategies, and additional runtime checks that monitor buffer operations for potential overflow conditions. Organizations should prioritize immediate deployment of the macOS Sonoma 14 update to mitigate this risk, as the vulnerability represents a significant attack surface that could be exploited by sophisticated threat actors. The remediation process should include comprehensive system monitoring to detect any potential exploitation attempts and network segmentation to limit the impact of successful compromises. This vulnerability serves as a reminder of the ongoing need for robust security practices in operating system development and the importance of timely patch management across all system components.